Device for opening or closing blinds.



PATBNTED JUNE 30, 1903.-

N. 0. BOND.

DEVICE FOR OPENING 0R CLOSING BLINDS.

APPLICATION FILED OUT. 29. 1902.

N0 MODEL.

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UNITED STATES- Patented June 80, 1903.

PATENT OFF-ICE.

NATHAN 0. BOND, OF HYANNIS, MASSACHUSETTS.

SPECIFICATION forming part of Letters Patent N 0. 732,261, dated June 30, 1903.

Application filed October 29,1902. Serial No. 129,271. (No model.)

To al whom it may concern:

Be it known that I, NATHAN O. BOND, a citizen of the United States, residing at Hyannis, in the county of Barnstable and State of Massachusetts, have invented certain new and useful Improvements in Devices for Opening or Closing Blinds; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to devices for opening and closing blinds from the inside of a dwelling and is designed to furnish a simple and convenient means for opening and closing ordinary window-blinds. It is furthermore designed to accomplish this result with the smallest amount of mutilation to the casing and adjacent parts.

The device in its general construction consists in a sprocket chain passing around wheels, one of which is located within the building and the other outside the building, and an operating-handle and a pin adapted to engage the outside blind and move the same to and from the window-casing.

Referring specifically to the drawings, Figure 1 is a sectional view through the casing of a window, the blind, and the frames, showing the device in operative position. Fig. 2 is an elevation of one of the castings for carrying the sprocket-wheel and the operating-handle, showing how the device is locked and held.

In the drawings, A is the casing or frame of the window.

B B are the window-sashes; O, the sashcords; D, the pulleys over which said cords pass, and E the weights.

F is a blind mounted to swing upon a hinge or pivot G to and from the casing in the ordinary manner.

H is a pin or lever carried by a'short shaft I, mounted to revolve in a casting J, said casting consisting of an upper and lower plate and a web connecting the same adapted to be fastened 011 the outside of the windowcasing by any suitable means. Vithin the casting and mounted upon the shaft list a sprocket-wheel K, around which passes an ordinary sprocket-chain L.

On the inner side of the casing A is mounteda casting J, similar to the one just described, with the exception that it is provided with two locking-teeth M M. Within this casting is mounted a sprocket-wheel K, similar to the one just described, carried by a shaft N, having attached thereto a lever 0, provided with a hinged handle P, adapted when dropped to the position shown in Fig. 2 to look behind the ears or projections M M, previously referred to. Connection is made between the two sprocket-wheels by sections of bicyclechain Q, linked together by plates R and S. The plate S is bent as shown in the drawings, so as to lie in close proximity to the plate R and to avoid the sash-weights E.

In attaching the device to the casing it is only necessary to bore a single hole through the casing and pass the chain and plates through the same, attaching the castings to the inner and outer side of the casing, as shown in the drawings. The pin or lever H is adapted to move in a slot T, formed in the rear edge of the blind, the said slot being lined with a metal casting U to prevent wear to the parts and to form a surface upon which the pin may operate. This casting is provided with an opening V, through which the pin projects, with a point NV. upon which the pin. operates to open the blind, and a point W, upon which the pin operates to close the blind.

The shafts I and N, referred to in the specification, are formed with a central section 2' n, which is made square and adapted to receive the sprocket-wheels,with a cylindrical section at the bottom and top, respectively, the lower one of which is smaller than the upper, so that the shafts can be dropped into the casting and readily removed. When in place, the shafts are held by a cotter-pin X, passed through the lower section beneath the casting. This construction is necessary in order to allow of the application of the device to a building, in-

aslnuch as if the parts were rigidly connected before application to the casing of the window it would be a very difficult matter to apply the device. The removal of one. or the other of understood. In order to open or close the blind, the handle P is raised to a horizontal position, and thereby released from the catch M, and the sprocket and chain rotated approximately one hundred and eighty degrees and the handle dropped. This movement, according to the direction in which it is given, will either open or close the blind and lock the same in such position.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. In a blind-operating device the combination of an inner and outer sprocket-Wheel, a chain by which movement may be imparted from one to the other, a handle for controlling the movement of the chain and sprocket, a pin carried by the outer sprocket adapted to e11- gage the blind in such manner as to open and close the same upon the movement of such part.

2. In a device of the kind described, the combination of an inner and outer sprocketwheel,a chain adapted to communicate motion between the two, a bent plate connecting the ends of the chain so as to avoid the sashweights, a pin carried by the outer sprocket, a casting adapted to receive the pin to open and close the blind, and a locking-handle mounted on the inner sprocket and adapted to engage with teeth carried by the casting in which said sprocket is mounted, substantially as shown and described.

3. In a device of the kind described, the combination of an outer and inner sprocket and chain for imparting movement from one to the other, a removable hinged handle carried by the shaft of the inner sprocket-wheel and a removable pin carried by the shaft of the outer sprocket-Wheel and adapted to engage the blind in such manner as to operate the same upon the movement of the handle, substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

NATHAN O. BOND.

\Vitnesses:

RAYMOND F. BOND, EVERETT O. BOND. 

